CN208283650U - The nearly eye display optical system of Clairvoyant type - Google Patents
The nearly eye display optical system of Clairvoyant type Download PDFInfo
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- CN208283650U CN208283650U CN201820610940.6U CN201820610940U CN208283650U CN 208283650 U CN208283650 U CN 208283650U CN 201820610940 U CN201820610940 U CN 201820610940U CN 208283650 U CN208283650 U CN 208283650U
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Abstract
The utility model discloses a kind of nearly eye display optical systems of Clairvoyant type, comprising: liquid crystal lens, transparent display and liquid crystal shading eyeglass；Wherein, the liquid crystal lens, transparent display and liquid crystal shading eyeglass are sequentially alternatively arranged setting, and the distance between the transparent display and liquid crystal lens are equal to the liquid crystal lens with the focal length under refractive power state；Towards the eyes of user on the outside of the liquid crystal lens.Due to using liquid crystal lens, the switching of optical system state not only may be implemented, but also the wearer of different eyesights can be adapted to, including myopia and long sight, which is worked and shows state in the nearly eye of Clairvoyant type, can also be worked in VR state.
Description
Technical field
The utility model relates to display optical system field more particularly to a kind of nearly eye display optical systems of Clairvoyant type.
Background technique
Clairvoyant type display optical system is a kind of device that can be allowed user while watch external scenery and projection image,
Achieve the effect that real image is superimposed without covering the visual field with the virtual image.The Clairvoyant type display optical system some being currently known is anti-using band
The prism for penetrating face (plane or free form surface) cooperates the optical system of one or more optical lens compositions, and some uses optical waveguide
The optical system that eyeglass adds projection lens to form is the image turnover conduction on the display except human eye sight, is presented on
The front of human eye.The former usual eyeglass is thicker, and transparent effect is bad, or higher to Free-Form Surface Machining required precision, so that
It is difficult to meet in actual processing and causes image quality poor.The latter's processing technology is complicated, so that it is difficult to effective volume production, and due to
Light superposition is realized using half reflection plated film, optical path is complicated, and light efficiency causes energy consumption very high generally 50% hereinafter, light efficiency is low.Mesh
The field angle of first two system is all smaller, and usually less than 40 degree, and be difficult to effectively improve.Therefore, current Clairvoyant type shows light
System all has that structure is complicated, and technology difficulty is big, and the problem that field angle is small.
Therefore, how to provide it is a kind of improve light efficiency while can reduce optical system complexity, increase field angle, thus
The Clairvoyant type display optical system for effectively improving the visual effect of user, is problem to be solved.
Utility model content
Based on the problems of prior art, the purpose of the utility model is to provide a kind of nearly eyes of Clairvoyant type to show optics
System can increase field angle, effectively improve the visual effect of user, and constitute simple.
The purpose of this utility model is achieved through the following technical solutions:
The utility model embodiment provides a kind of Clairvoyant type nearly eye display optical system, comprising:
Liquid crystal lens, transparent display and liquid crystal shading eyeglass；Wherein,
The liquid crystal lens, transparent display and liquid crystal shading eyeglass are sequentially alternatively arranged setting, the transparent display
The distance between liquid crystal lens are equal to the liquid crystal lens with the focal length under refractive power state；
Towards the eyes of user on the outside of the liquid crystal lens.
Clairvoyant type provided by the embodiment of the utility model is close it can be seen from above-mentioned technical solution provided by the utility model
Eye display optical system, it has the advantage that:
By the way that by certain order, sequentially spaced liquid crystal lens, transparent display and liquid crystal shading eyeglass form one kind
The nearly eye display optical system of Clairvoyant type, is not only simple in structure, and since the optical texture that the system uses is similar with VR, field angle can
Up to 90 degree or more, field angle is big；And due to the mode of optical element and display superposition directly before eyes used, light efficiency reaches
80% or more.The optical system can be adapted to different eyesights, including myopia and long sight, and wearer is in the light using the utility model
It learns and does not need to wear eyesight correcting glasses again in systematic procedure；Due to using liquid crystal lens, optical system state both may be implemented
Switching, and the wearer of different eyesights can be adapted to, including myopia and long sight, which is worked and is being had an X-rayed
The nearly eye of type shows state, can also work in VR state.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model
Example, for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other accompanying drawings.
Fig. 1 is that the nearly eye display optical system of Clairvoyant type provided by the embodiment of the utility model constitutes schematic diagram；
Fig. 2 is the schematic diagram that the nearly eye display optical system of Clairvoyant type provided by the embodiment of the utility model is in VR state；
Fig. 3 is that the nearly eye display optical system of Clairvoyant type provided by the embodiment of the utility model is in showing for nearly eye display state
It is intended to；
Fig. 4 is that optical system provided by the embodiment of the utility model is in the signal that nearly eye shows condition adapted farsightedness
Figure；
Fig. 5 is that optical system provided by the embodiment of the utility model is in the signal that nearly eye shows condition adapted myopia
Figure；
Fig. 6 be it is provided by the embodiment of the utility model using the optical system when image superposition seen by person signal
Figure；
In figure: the nearly eye display optical system of 1- Clairvoyant type；2- liquid crystal shading eyeglass；3- transparent display；4- liquid crystal lens；
5- human eye；A- liquid crystal shading eyeglass applies input voltage；B- transparent display shows image；C- liquid crystal lens apply voltage；D-
Scenery one seen by person；A1- liquid crystal shading eyeglass does not apply input voltage；B1- transparent display is without display image；C1- liquid
Brilliant lens no applied voltage；D1- scenery two seen by person.
Specific embodiment
Below with reference to the particular content of the utility model, to the technical scheme in the embodiment of the utility model carry out it is clear,
It is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole implementation
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
Every other embodiment, belong to the protection scope of the utility model.It is not described in detail in the utility model embodiment
Content belongs to the prior art well known to professional and technical personnel in the field.
As shown in Figure 1, the utility model embodiment provides a kind of Clairvoyant type nearly eye display optical system, comprising:
Liquid crystal lens, transparent display and liquid crystal shading eyeglass；Wherein,
The liquid crystal lens, transparent display and liquid crystal shading eyeglass are sequentially alternatively arranged setting, the transparent display
The distance between liquid crystal lens are equal to the liquid crystal lens with the focal length under refractive power state；
Towards the eyes of user on the outside of the liquid crystal lens.
In above-mentioned optical system, liquid crystal lens are in the wrong using being changed by input voltage signal for input voltage control terminal is equipped with
The liquid crystal lens eyeglass of luminosity；
Further include: lens input voltage control device is electrically connected with the input voltage control terminal of the liquid crystal lens.
In above-mentioned optical system, liquid crystal shading eyeglass by input voltage signal using being changed equipped with input voltage control terminal
Become the liquid crystal shading eyeglass of light transmittance；
Further include: shading mirror input voltage control device, it is electrical with the input voltage control terminal of the liquid crystal shading eyeglass
Connection.
In above-mentioned optical system, transparent display is shown using transparent liquid crystal display or transparent organic light emitting diode
Device.
Above-mentioned optical system further include: eyeglass holder, the liquid crystal shading eyeglass, transparent display and liquid crystal lens are all provided with
On the eyeglass holder；
Towards the eyes of user on the outside of the liquid crystal lens, when using wearing, liquid crystal lens lateral surface is close to user
Eyes.
The utility model embodiment is specifically described in further detail below.
A kind of nearly eye display optical system of Clairvoyant type provided by the utility model, including liquid crystal shading eyeglass, transparence display
Device and liquid crystal lens；Wherein, the distance between transparent display and liquid crystal lens are about that liquid crystal lens have refractive power state
Under focal length (referring to Fig. 1).
In above-mentioned optical system, liquid crystal lens are a kind of eyeglasses that can change diopter by input voltage signal.
When not having voltage signal, liquid crystal lens do not have refractive power, and convergence effect will not be generated to light, is equivalent to a piece of plate glass
Glass.When inputting certain voltage signal, liquid crystal lens can generate refractive power, can generate remittance to by the light of liquid crystal lens
Poly- or disperse function, is equivalent to a piece of convex lens or concavees lens, inputs different voltage signals, liquid crystal lens can generate different
Refractive power.Input voltage is controlled by the lens input voltage control device with the electrical connection of the input control end of the liquid crystal lens
System.
In above-mentioned optical system, liquid crystal shading eyeglass is a kind of eyeglass for changing light transmittance by input voltage signal.
When not having voltage signal, liquid crystal shutter eyeglass is in high transparency state.When inputting certain voltage signal, liquid crystal shutter
Eyeglass can change to impermeable light state.Input voltage is by inputting electricity with the shading mirror of the input control end of liquid crystal lens electrical connection
Pressure control device controls.
In above-mentioned optical system, transparent display is a kind of light that can penetrate real world, can also show image
Display.It can be transparent liquid crystal display, transparent organic light emitting diode display etc..
Liquid crystal shading eyeglass, transparent display, the arrangement of liquid crystal lens are as shown in Figure 1.Successively from human eye to the external world
For liquid crystal lens, transparent display and liquid crystal shading eyeglass.
Two states can be in when above-mentioned optical system works, specifically:
State one (VR state, referring to fig. 2): apply input voltage signal to liquid crystal shading eyeglass and liquid crystal lens, simultaneously
Transparent display is driven to show image.Under this state, liquid crystal shading eyeglass is opaque, and extraneous outdoor scene light can be stopped to enter people
Eye；Liquid crystal lens generate refractive power, and the light issued to transparent display is modulated, and human eye is made to observe the virtual image of amplification, and
And this virtual image is presented on the position other than human eye 250cm.
State two (perspective display state, referring to fig. 2 to Fig. 5): liquid crystal shading eyeglass and liquid crystal lens no-voltage signal, thoroughly
Bright display is without image.Under this state, liquid crystal shading eyeglass light transmission, liquid crystal lens do not have a refractive power, transparent display light transmission,
There is no image, extraneous outdoor scene light smoothly can enter human eye through liquid crystal sunshade lens, transparent display and liquid crystal lens.By
In liquid crystal lens without refractive power, therefore when extraneous outdoor scene light penetrates liquid crystal lens, will not be modulated, and human eye will not be made to generate not
Suitable sense.
In state two, if human eye has the case where myopia or long sight, certain voltage letter can be applied to liquid crystal lens
Number, enabling the refractive power of liquid crystal lens to be adapted to the eyesight of human eye, (Fig. 4 illustrates the state of adaptation long sight, and Fig. 5 illustrates to fit
State with myopia).
The state one and state two of optical system can be switched fast, and due to the presence of visual persistence phenomenon, human eye can be with
Observe the image that virtual image is superimposed with outdoor scene (referring to Fig. 6).Above-mentioned switching frequency is greater than certain numerical value, such as 60 hertz,
So that human eye will not generate the senses of discomfort such as flashing.
Optical system can also be constantly in state once, and optical system at this time is equivalent to VR (virtual
Reality) optical system.
The nearly eye display optical system structure of the Clairvoyant type of the utility model is simple, and field angle is big.The nearly eye of common Clairvoyant type
Display optical system uses special optical element, and the image on the display except human eye sight is transferred and is conducted, is presented on
The front of human eye.Structure is complicated, and technology difficulty is big, and field angle is small, and the optical system field of view angle of this type is generally at 40 ° at present
Below.And the optical texture that the optical system of the utility model uses is similar with VR, field angle is up to 90 degree or more.It is common
Depending on type, nearly eye display optical system optical path is complicated, and realizes light superposition using half reflection plated film, light efficiency generally 50% hereinafter,
For the utility model optical system by the way of optical element and display superposition directly before eyes, light efficiency reaches 80% or more.
The optical system of the utility model can be adapted to different eyesights, including myopia and long sight, and wearer is using this reality
It does not need to wear eyesight correcting glasses again in the process with novel optical system.
The optical system of the utility model, which can work, shows state in the nearly eye of Clairvoyant type, can also work in VR state.
The utility model structure is simple, at low cost, productivity and high reliablity.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
Subject to the scope of protection of the claims.
Claims (5)
1. a kind of nearly eye display optical system of Clairvoyant type characterized by comprising
Liquid crystal lens, transparent display and liquid crystal shading eyeglass；Wherein,
The liquid crystal lens, transparent display and liquid crystal shading eyeglass are sequentially alternatively arranged setting, the transparent display and liquid
The distance between brilliant lens are equal to the liquid crystal lens with the focal length under refractive power state；
Towards the eyes of user on the outside of the lens.
2. the nearly eye display optical system of Clairvoyant type according to claim 1, which is characterized in that the liquid crystal lens are using setting
There is the liquid crystal lens eyeglass for changing diopter by input voltage signal of input voltage control terminal；
Further include: lens input voltage control device is electrically connected with the input voltage control terminal of the liquid crystal lens.
3. the nearly eye display optical system of Clairvoyant type according to claim 1, which is characterized in that the liquid crystal shading eyeglass is adopted
With the liquid crystal shading eyeglass for changing light transmittance by input voltage signal for being equipped with input voltage control terminal；
Further include: shading mirror input voltage control device is electrically connected with the input voltage control terminal of the liquid crystal shading eyeglass.
4. the nearly eye display optical system of Clairvoyant type according to any one of claims 1 to 3, which is characterized in that described transparent
Display uses transparent liquid crystal display or transparent organic light emitting diode display.
5. the nearly eye display optical system of Clairvoyant type according to any one of claims 1 to 3, which is characterized in that further include: eye
Mirror support, the liquid crystal shading eyeglass, transparent display and liquid crystal lens are each provided on the eyeglass holder；
Towards the eyes of user on the outside of the liquid crystal lens.
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| CN201820610940.6U CN208283650U (en) | 2018-04-26 | 2018-04-26 | The nearly eye display optical system of Clairvoyant type |
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| CN201820610940.6U CN208283650U (en) | 2018-04-26 | 2018-04-26 | The nearly eye display optical system of Clairvoyant type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287409A (en) * | 2018-04-26 | 2018-07-17 | 北京枭龙科技有限公司 | The nearly eye display optical system of Clairvoyant type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287409A (en) * | 2018-04-26 | 2018-07-17 | 北京枭龙科技有限公司 | The nearly eye display optical system of Clairvoyant type |
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